package com.bwie.realtime.jtp.dwd.log.function;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

import net.bwie.realtime.jtp.utils.DateTimeUtil;
import org.apache.flink.api.common.state.ValueState;
import org.apache.flink.api.common.state.ValueStateDescriptor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
import org.apache.flink.util.Collector;

public class AdjustIsNewProcessFunction extends KeyedProcessFunction<String, String, String> {
//  todo 声明状态
    private transient ValueState<String> firstDateState = null;

    @Override
    public void open(Configuration parameters) throws Exception{
//        初始化
        firstDateState = getRuntimeContext().getState(
                new ValueStateDescriptor<String>("first-date", String.class)
        );
    }
    @Override
    public void processElement(String value, Context ctx, Collector<String> out) throws Exception {
//        获取状态值
        String firstDate = firstDateState.value();
//        解析字段值
        JSONObject jsonObject = JSON.parseObject(value);
        String isNerValue = jsonObject.getJSONObject("common").getString("is_new");
        Long tsValue = jsonObject.getLong("ts");
//        isnew=1
        if("1".equals(isNerValue)){
            if(null==firstDate){
                firstDateState.update(DateTimeUtil.convertLongToString(tsValue,DateTimeUtil.DATE_FORMAT));
            }else{
                if(!firstDate.equals(DateTimeUtil.convertLongToString(tsValue,DateTimeUtil.DATE_FORMAT))){
                    jsonObject.getJSONObject("common").put("is_new","0");
                }
            }
        }
//        isnew=0
        else {
            if(null==firstDate){
                firstDateState.update(DateTimeUtil.convertLongToString(tsValue,DateTimeUtil.DATE_FORMAT));
            }
        }
//        输出数据
        out.collect(jsonObject.toJSONString());
    }
}
